Sucker-rod-coupling guide



Nov. 23 1926.

F. S..BOWSER SUCKER R91; COPLING GUIDE FiledMay 2. 1925 Francia EmwsEr" Patented Nov. 23, 1926.

FRANCIS S. BOWSER, OF EL DORADO, ARKANSAS.

SUCKER-RODCOUPLING GUIDE.

Application -iled May 2,

This invention relates to improvements in sticker rod joints.

The primary object of this invention 1s the provision' of an improved guide sleeve for sucker rod strings, which is attached in novel manner thereto, and the function of which is to concentrate wear thereon incident to reciprocation of the sucker rod in the tube.

A further object of this invention is the provision of a novel type of sucker rod joint, embodying a sleeve-like' guide member which is screw-threaded in a novel relation upon the` sucker rod coupling, and which at its external periphery is of a diameter or width greater than any other part of the sticker rod which reciprocates within th'ewell tube, so that wear will be concentrated upon this guide member, incident tocontact with the inside of the tube.

Other objects and advantages of this invention'will be apparent during the course of the following detailed description.

In the accompanying drawings, forming a part of this specification, and wherein vsimilar'reference characters designate correspending parts throughout the several views,

Figure l is a side elevation of the improved sucker rod coupling or joint, and including the improved guide member, show` ing the same relatively positioned within the well tubing.

Figure 2 is a sectional View taken longitudinally through the sucker rod jointstrueture. i

` Figure 3 is 'a transverse sectional view taken substantially on the l'ine 3 3 of Figure 2, and showing more particularly the relation of the guide sleeve to the coupling at the sucker rod joint,

In the drawing', wherein for the purpose of illustration is shown only a preferred embodiment of this'invention` the letter A may generally designate well tubing of any approved character., within which the sticker rod line is reeiprocably disposed, and which comprises a plurality of sticker rod sections B, connected by' a coupling C over which the improved guide member or sleeve D is positioned, in a novel relation, to prevent its` accidental detachment, and to operate eHieiently in buffing the frictional action incident to rod reciprocation in the tube A. The sucker rods B are of the conventional construction, each including the polygonal shaped wrench engaging portion 10, and at 1925. Serial No. 27,613.

the outer end thereof supporting the reduced lscrew threaded shank ll, which at the junetureof the same with the portion lO has an annular coupling abutting shoulder 12, as in well known construction.

The coupling sleeve or member C is pre terably tubular in formation, having the passagrw'ay 2t) which is threaded inwardly of the opposite end edges 2l and 22 thereof, as at 23 and 2i; this threading preferably not extending the entire length of the passageway 20, but only inwardly a short distance from the end edges ofthe said coupling' sleeve, to detachably accommodate the screw threaded shanks 1ll of lower and upper rod sections l5, substantially in the ,relation illustrated in Figure 2 of the drawing. As a novel feature of the coupling member C, the same is externally screw threaded at 30, inwardly from the top edge 22 thereof, and continuing for approximately three-quarters of the length of the said sleeve, so that saidthreading terminating short ofthe lower end edge of the cou pling member. At diametrically opposedv sides of the coupling sleeve C, the saine is provided with flattened wrench engaging surfaces 3l and 35, which extend across the threads 30,A only at the lower end of the threading 30, approximately midway be tween the ends of the coupling sleeve C, and as is well illustrated in Figures 2 and 3 yof the drawings. l

`Referring to the guide and we`ar receiving member D. the same is preferably of sleeve-lile formation, and made up of any approved alloy metal, which is softer than the tubing A, so that wear will be concentrated ou the member l), and permit thepurpose of the invention to provide a guidey and wear receiving member D which is softer than the tubing A. Y This member D is preferably internally screw threaded at ing A., at any time.

oil may be pumped, should the ribs be in abutment with the inside surface of `the The advantages ofusing a sleeve or guide member D in the relation to the coupling member C, as is shownin the drawings andv above described, will be apparent torthose skilled in the art to which this invention relates, since thereby the sleeve D will be prevented from fallingoiI the cou ling sleeve C. yThe threads 30 terminate s ortof 'the lower end of the coupling sleeve C, toprovide abinding ed e or shoulder againstwhich the sleeve D inds, when the same 1s fully screwed onto the coupling C, and hence there is absolutely no liability of the downward unthreading of the guide member D so as to ermit its falling into the well. On the ot er hand, should the same become unthreaded upwardly of the coupling member C, by gravity the same will still rest substantially in the relation shown,

to receive wear incident to its abutment in sliding relation against the well tubing. The threadedy connection of the wear receiving sleeve and the coupling sleeve Ais an im- Y portant departure from eXpedients which ave heretofore been resorted to, for effect- 4ing this connection, and incident tofthis screw threaded connection the sleeve D will be absolutely connected to the coupling C, and cannot break away therefrom. I am of course aware that sleeves of this nature have been connected by flanges and like expedients to the couplings, butthese flanges are well known to be practically useless, since they easily break off and the result is that the guide or wear receiving sleeve drops to the bottom of the sucker. rod string, and in which position it is of course useless. On. the 'other hand, with the use of my imp roved guide and wear receiving member in the novel connection shown, the same is rabsolutely revented from .any fallinginto the well, ather downwardly along the sucker rod string .than the coupling to which it is normally attached. Therefore,

t the advantage of such connection is obvious.

Various changes-in the shape, size, and.

- 1. In combination with a sucker rod lino,

` acoupling having a portion thereof -provided Vwith 4screw threads terminating abruptly short of the lower end to provide a shoulder, and awear receiving sleeve-like 'member internally screw threaded from end to end adapted vfor detachable connection on said screw threaded portion' to valb'nclingg; u

position with said shoulder.

2. In combination with a pair of sucker like arrangement having a passagewayv therethrough Iinternally screw threaded for detachable connection from the upperend Y ofl the screw threaded portion of said coupling sleeve-like portion and ada ted to bind against said upwardly facing e ge; l

3. In a sucker rod coupling the :combina1 tion of a coupling sleeve having ir1'tj. ernallyl screw threaded socketsinwardlyat the opposite ends thereof, said sleeve'externallyfI thereof and from .the upper edge thereof having screw threads -which terminate short of thelower end thereof to provide a binding edge, said coupling sleeve externally' thereof substantially midway of the ends having oppositely disposed Hat wrench enf gaging surfaces, and a guide sleeve of soft metal having an internally screw threaded passageway4 therethrough to be vdetachably connected o'n' the externally screw threaded portion of the coupling sleeve inwardly from the upper ed eof said coupling sleeve and downwardlyt erover into binding engagement with said binding edge.

4. In a device of the class described the combination with a pair of sucker rods, joint -means connecting the ends ofthe sucker rods, a wear resisting sleeve having` a passageway therethrough, and thread means formed in the passageway of the wear resisting sleeve and exteriorly on the joint meansinwardly from the'upper end thereof formed in cooperating relation-to provide a *binding* shoulder which will limit the downward threaded movement of the threaded -wear resisting sleeve upon said joint means.

' FRANCIS s. BowsER. 

